feat: Add Oghma RAG Proxy for SkyrimNet lore injection

RAG proxy that intercepts SkyrimNet LLM requests and enriches them
with relevant Tamrielic lore from CHIM's Oghma Infinium database.

Features:
- FastAPI proxy compatible with OpenAI API
- ChromaDB semantic search for lore retrieval
- NPC profile extraction from SkyrimNet prompts
- Google Sheets ingestion for CHIM's Oghma data
- Kubernetes deployment manifests
- Debug endpoint for RAG operation monitoring

Collections ingested to iris-dev ChromaDB:
- oghma_lore: 1951 entries (scholar knowledge)
- oghma_basic: 1949 entries (commoner knowledge)
- oghma_visual: 1151 entries (Omnisight perception)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

oghma-proxy/config.yaml

@@ -0,0 +1,76 @@
+# Oghma RAG Proxy Configuration
+# Copy to config.local.yaml and customize for your environment
+
+proxy:
+  host: 0.0.0.0
+  port: 8100
+  workers: 1
+
+upstream:
+  # OpenRouter (cloud)
+  url: https://openrouter.ai/api/v1
+  api_key: ${OPENROUTER_API_KEY}
+
+  # Local vLLM alternative:
+  # url: http://localhost:8000/v1
+  # api_key: ""
+
+  timeout: 120  # seconds
+  stream_timeout: 300  # for streaming responses
+
+chromadb:
+  host: iris-dev.eachpath.local
+  port: 35000
+  collection_lore: oghma_lore
+  collection_basic: oghma_basic
+
+retrieval:
+  max_results: 5
+  min_score: 0.55
+  embedding_model: all-MiniLM-L6-v2  # Match SkyrimNet memory embeddings
+
+injection:
+  enabled: true
+  position: after_bio  # after_bio | before_conversation | system_suffix
+
+  # Injection template
+  template: |
+    ## Relevant Lore Knowledge
+
+    Based on your background, you would know:
+
+    {% for entry in lore_entries %}
+    - **{{ entry.topic }}**: {{ entry.content }}
+    {% endfor %}
+
+    Remember: Reference this knowledge naturally in conversation when relevant.
+
+npc_extraction:
+  # Regex patterns for extracting NPC info from prompts
+  patterns:
+    bio_header: '## (?P<name>[\w\s]+) Bio\n- Gender: (?P<gender>\w+)\n- Race: (?P<race>\w+)'
+    role_context: 'You are (?P<name>[^,]+), (?:a |an )?(?P<race>\w+)'
+    faction_member: 'member of (?:the )?(?P<faction>[\w\s]+)'
+    location_in: '(?:in|at|near) (?P<location>Whiterun|Windhelm|Solitude|Riften|Markarth|Morthal|Dawnstar|Winterhold|Falkreath)'
+
+logging:
+  level: INFO
+  format: json  # json | console
+  log_injections: true
+
+  # Log decisions to phoebe for analysis
+  phoebe:
+    enabled: true
+    host: phoebe-dev.eachpath.local
+    port: 35432
+    database: nimmerverse
+    table: oghma_proxy_decisions
+
+cache:
+  enabled: true
+  ttl_seconds: 300  # Cache lore lookups for 5 minutes
+  max_size: 1000    # Max cached queries
+
+metrics:
+  enabled: true
+  endpoint: /metrics  # Prometheus-compatible